Type-writer locking device.



v G. W. Domme. TYPE WRITER LOCKING DEVICE.

APPLICATION FILED AUG. 21, 1908.

929,841. f Patented Aug. s, 1909.

5SHBETS-SHEET 2.

G. W MENING.

Tfe motn@ 13mm.

APPL

FILED AUG-.21, 1908.

GATIOE @mai uga E, i909.

6 SHEETS-BHEBT 3.

G. W. DUNN-ING. TYPEl WRITER LOCKING DEVICE.

APPLIOATION PILED AUG. 21, 1908.

Patented Aug. 3, 1909.

u: s SHEETS-SHEET. 4.

w l lli/f ATTORNEYS, lv

GEORGE W. lONNNG, OF NEW YORK, N. Y., ASSIGNOR TO HARRY T. AMBROSE. OF ORANGE, NEW JERSEY.

noemer-ii,

Specification of Letters Patent.

Application filed August 2l, NGS.

Fatented Aug. 3, 1909.

Sera! No. 49,6585

/e @ZZ wlmi?. it 'indq/ concern.'

it lniown that l, Gnonen Yi'. Donnino, edil/Len oi tlie United States, residing et declare the following to be o, inll, clear, and exe-ct description of the invention, suoli as will enable others skilled io the ort to Whicli it nnpertnino to ninlie sind use the seine.

ine present in veiilifion relates to flat- "ters, nn l more pzirticnlerly to ior v the tiltofiile-nieniber tine imi-intii'fn will liere i. i the so-eolled ne i" .f ieinpliliorl ,in pnt ine; for instance, 5,434, Junl 17,

'liled El?, i;

ixiftion appli: f

iii ey liet-plnten .le port nini' und-er certain @olif nnloelfed under tlnis olivinti o' tln.

l llirt zw nalljf-opei'nied menos lor eli rioting' tlie release of tlie loel ing-ineinlier :md facilitating tlie manipulation of 'the nnielnne es e. Wliole.

Inaehn J oi 'tnin e, there nre'inoluiled g :a une, coinpriglng n. l i oi ii Xi l niged platen, bolli. mount olY suitable construetion. ini" npplieni'ion, previously and dosoriloed n, len, in nori al lovrered i'ionitio; i .nu onmtion with nie-ans for looking it in ,eed po.f on, and hand-operated deviees For releasing tlie platen in either posi Iion. l

lilyl present invention, in the preferred iliodinont :in sliown ind described, includes n ineens lor locking tl'ie platen in its le" ered* or nrrinnl position, :ind :infomatie under certain condi- S lill' woo,

' the triweling tions, namely, when the trzivelinganeolianisni nieves to tlie rear part of the trnelrfrfiils, in order to permit the track-freine or platen, es tlie cese innjvfbe, to be tilted, suoli devices operating also to look the platen as soon es mechanism moves forward slightly.

ln one :ispeot ol' the invention, l lleve introduced into flat-platen typewriter, means (nutoinntiezilly Controlled) lor positively and rigrridlj,T holdingr the Lilieble-member (the platen orv the traen-lume) while in it@y nornml position during the adjustment ol' o page oi n boek on the writingnrl'nee, it has been found tlinlv nliere tlie-Se tiltnble-ineni bers are not so held, they een lie disturbed snllieiently to be displneed oniv ol' proper op eretive position, neoeenitnting refnljnsting ol' the sheet.

In :inotlier aspect ol' the invention, pio vision is mode Vl'or oontrollng one ol' the tilt :ilile-nienibers independently oi" alie other, as, for inet-mice, the platen independent of tlie troon-frame. ln the Benning machine aforementioned, encii of the members lmve independent supports, :is diselosed in my lntent No. 826,'-lw2 nloreinentioned, und consequently, `polli ol' these tiltelile-nieinbersi nre empathie ol' upward eind down wird niovenient independent ol eeeli'otlier; and, in the absence ol' n Controlling device, on unskilled `iperotor iniglrt endeavor to rz. se or lower either lling d ieinlier Withoutre rd to the loon/(ion. o'l' tlie Writing-Ineensniln-(nu'ringe ol' tlie innoliine :in-:l its. snppeiling-ironie. This eontiolling device, disclosed in tlie presont application prevents the indiscriminate operation ol' the liingedmieniliern by having tlie Writing-moniliamis, :carrie-ge cooperating; 'with tlie liingedmieinber in suoli n Way als positively to prevent movement ol' 'tlie liing/ed-ineniliern, excepting when llie Writing-ineolmnisin-em'rifnge in :i predetermined position, :is Vl'or instni'ioe, wlienitisnd- 4inoeni to Llie liingje oi the ienpeoiiive lling-edniemeer.

@ne great dventnge from this eor"l'rne tion is that is iinposnilvle to lin-ow the platen up n,niiet the printing-meelnniisin since the printing-nieelmnisni is ont el'its path when released. This constitutes n greet advantage over inzieliines unprovided with suoli n, .looking devioe, by avoiding duino by the stationary frame of the machine, and

movable to engage a recess in the tiltablemember such as the platen. A lever is also pivoted 0n the frame and is connected to the y pin or bolt in such a manner as to control the movement of the same, the normal'position of the lever being such that the pin or bolt Will be held in locking engagement when the platen is .in its normal or lowered position. Upon movement of the traveling-carriage to the rear oithe track-rails, the ever just described is engaged by an abutment on the carriage, and operates the pin or bolt' to carry it out of engagement with theplaten, leaving the platen free to be raised.

In the modified form of construction, I show an arrangement of parts wherein a movable locking-abutment is carried by and forms a part of the lever itself. Other changes may readily be made Without departing from the spirit of my invention, which is disclosed in the several forms, shown and described in this application.

With these lseveral objects in view, the in vention comprises the improved form of construction hereinafter described in detail, more fully pointed out in the claims, and shown in the accompanying drawings, wherein I disclose two of' many embodiments ol' the invention, and in which:

Figure 1 is a top plan view with parts broken away., ol' the invention applied to a Donning machine such as illustrated in Patent No. 826,482, July 17, 1906, the platen being locked; Fig. 2 is a side-elevation ofthe same, also showing the platen locked; Fig. 3 is a front-elevation showingthe platen u nlocked; Fig. 4 is a side-elevation also showing the platen unlocked; Fig. 5 is a View showing the invention associated with. the lock for holding the platen in raised position 5 Fig. 6 is a view showing the track-i`rame in elevated position; Fig. 7 is a plan view of a modified form of the invention, and Fig. 8 is a side-elevation oi the construction disclosed in Fig. 7. l

Referring more particularly to the drawings, in which like reference characters refer to corresponding parts in the several views, A designates the line-spacing carriage or travelin -mechanism of the machine, and A the trac s included by thetrack-frame and upon which the carriage is mounted to travel. -IAz is the tiltable platen, which, together with the track-frame, is `votally mounted in the brackets B of the Itbase frame.` Careaaeai riedby. the brackets B, and supported thereon by arms B', is a barre?. or sleeve the upper end to permit temporaiv dfsen gagement of the pin D from the ndrtion (Y as hereinafter more fully deseribed. "lhe barrel or sleeve B2 is provided with a screw B3, which engages a attei'ied, cutaway surface l?)4 on the bolt C, the setscrcY.' and surface B4 coperating to prevent the bolt C from turning and also to limit the Alengthwise movement of the bolt.

A3 is a recess in the side oi the platen adapted to be engaged by the lookin@ or bolt C as will appear mere fully hei after.

Although l have shown the loclringane. ber and the recess ci circular shape, t` formcan be varied to suit any reguireruents, it being` understood that l have shown cniy such structure as has proved moet si :esse-ful in actual practice. y

D is a lever, which is pivoted on the bracket B, and has a rejection orpiu D at its forward end, Whici is vpositioneal vto en gage the cani-slot C2 of the locking me bei', and as it moves in said slot, 'the locking" member is moved into or out of locl gagement with the platen. .1. t the of the lever l), there is formed a aradgilte abutment D2 which is shown in norinai pcsition in Fig. 2 Where it is raised and iying in the path of a stud or roller A" mounted on the travelinganechanism A.. l may ein? the stud or roller A" entirely, and use the the frame of the line-spacing carriz gage the lever D, in which instan ce would have to be extended to lie in the rath ci secures a cooperation of the travelinganeeh anism and the lever' D to move the `latter and torelease the lock at the proper time.

It is apparent that, instead ci controlling the operation of the hinged-inember by the Writing-mechanis1n-carriage, i may empi .5', in conjunction with said carriage, or without it, other means, such as a manually-operated device or member, as for instance, a connecw tion to be voperated by the foot or the hand.

It is to be understood that one of the rnembers may be made stationary and j rma-- nent, and still permit use of the controlling device in connection with the other member; as for'instance, the traelefranie may be eta tionary and the platen tiltable.

tine env is a spring carried by the tracloframe ifi-inge and abutting the lever D to hold the same in its normal raised position'.

The operationoi the device is as follows in the normal position of the parte, the lever Dis eis-shown in Fig. 2 with the projection er pin D lying at the bottom of the cam-slot C2, and' the locking' member C pushed over to the' limit oi its movement and in engagement with' the recess A3 of the platen. The platen Will remain lockedV thus, until the travelingmeehanisrn is moved to the rear portion of the traclerais at which time the stud Y engages the abutment D2, depressing the rear end and raising the iront end oi' the lever l.' rlhis movement of lever D against the tendency of a spring E, depending from a portion of track-member A', causes the projection D to move vertically, and, through the earn-slot C?, slides the locking-member Q over ont of locking engagement with the recess in the platen, thus releasing the platen and permitting the same to be raised as desired.

As shown in Figs. 5 and 6, the device may also be employed inconjnnction with a lock which holds the platen in its raised position, whereby there is provided a lock for holding the tiltablemember either raised or lowered, as the case may he, together with suitable means for releasing; the locking device.

ln the construction shown in Figs. 7 and 8, it should be noted that the general principle of operation is the same, although the details of construction are slightly varied. ln .the form previously described, the lever D is positioned outside of the traclorail A, whereas in the modified construction, the lever D is positioned inside of the track-rail AC The platen A is 'formed at its upper rear edge with an abutment face A5. (arricd by 'the forward ond oi the lever l), and arranged to engage the face A5, is a. locking-abutment D provided withl the beal D4, which, when in locked osition, overliesI the abutment iace M'. W ien in lowered position, the abutment D3 lies against the abutment lace IU and prevents any movement oi the platen vertically. E. is a leaf spring secured to the track-trame and tending to hold the lever D in raised or locking position, with the abutnient engaging the abutment tare il, whereby the platen is prevented. troni beingr raised. As soon tie traveling-mechanism is moved to the rear oi the track-traine, the stud [5.4 engages the abutment B2, dcpressing.,r the rear end of lever l) and raising the abutment D3 away from the abutment face of the platen, and thereby leaving the platen free to be moved upward.

Although l have shown here Vseveral preferred forms of construction, l. do not desire to be limited to either oi these general Yforms nor to the precise forms of the several elements employed therein, it beine; nnderstood that may vary the' construction as an entirety as well as certain et its details, without departing 'from the spirit or scope oi the invention.

lWhat l claim as new and desire to secure by Letters-latent is,

1. in a liet-platen typewriting-machine, the combination with a travelingmecliain ism, ot a tiltable-rneinber, means i'or locking the tiltable-niember, and instrunientalities automatically operated by said travelingmeclianism effecting; actuation oi saidloclring means.

2. ln a flat-platen typeWritingmiachine, the combination with a travelingnnechanisn, of a tiltablefmcmber, means for locking the tiltable-ineinber in lowered position, and instrumentalitics automatically controlled by the traveling-mechanism for eliecting actuation of said locking means.

3. ln a ilateplaten typewritingmachine, the-combination with a traveling-mechanism, oli' a tiltable-memher, means tor locking said tiitable-ineinber, a lever controlling said locking means, said lever being operatively associated with the aforesaid travelingmechanism.

4. ln a iat-platen typewritingmachine, the combination with a traveling-mechanisni, oi a tiltable-meniber, means for locking the tiltableanember, a depressible lever controlling said locking, means, anddevices carriedby said travelingmiechanism for depressing said lever.

5. ln a flat-platen typewriting-machine, the combination with a traveling-mechanism, et a tiltable-Inember, means for locking,r said tiltablc-niember, a pivoted lever havingv oppositoly proiecting ends, one ol said ends being adapted to control said locking means and the other end being' operatively associated `with the aforesaid traveling-merlianism.

o. In a {lat-platen typevvriting-machine, the combination with a traveling-mechanism, ol a tiltable-platen, means for locking said nlaten in lowered position, and a lever controlling?r said locking means and operatively associated witb the travelingmech anisni.

7. ln a {lat-platen typewriting-machine, the combination with traveling-inechanisni, of a tiltable platen, means for locking the platen in lowered position, a pivoted lever having oppostely projecting ends, one of said ends controlling the locking means and the other ol said ends being operatively associated with the aforesaid traveling-mech anisrn.

(E. ln a (lat-platen typeWriting-maelline, the combination with a traveling-mechanism, oi a tiltable platen, means for locking said platen in raised iosition, additional means toi' locking said platen in lowered poi sition, and devices controlled by said tr .vel-

ing-mechanism for actuating said lust-mentioned looking means.

9. In a flat-platten typewriter, the combination with a tiltablemember, an operating member, and a locking member with .which the operating member connects andv operates to position the locking member with relation to the tiltable-member.

10. ln eilat-platen typewriter, the combination with e traveling member, a tiltablemember, a locking-member, and an operating member connecting with the locking member and actuated by the traveling member for positioning the locking member.

1] In a flat-platen typewriter, the combination with a traveling member, a tilteblemember, a lo cking member, and an operating member movable into and out of engagement with the looking .member and actuated by the traveling member for positioning the looking member.

12. Iii a fiat-platen typewriter, the combination with a traveling member, a tilteblemember, a looking member, an operating member coperating with the looking mem ber to position the same, and means for mving the actuating member out of engagemeht with the locking member.

@geen anism, of a tilteble-member, an a utment faoe formed upon said tiltable-member, and a locking device under the control of said traveling-mechanism and earryin a lockingabutment adapted toengage sei abutment face of the tilteble-member.

15. ln a Hat-platen typewriter, the combination with e traveling member, of a tilteblemember, a looking member therefor, anddevices controlled by the traveling member for actuating seid looking member., l

In testimony whereof, I affix my signature, in the presence of two subscribing Witnesses.

GEORGE W. DONNING.

Witnesses CHAS. P. BA'rr, W. L. BrLLMYER. 

